Revert "Packaging: persistent TIMESTAMP"
Revert "Packaging: persistent TIMESTAMP"

This reverts commit a1d720f42fb8dfad01008b587d7406bb55a91519.
We found the solution doesn't work properly and fix of the solution
contained too much magic for people. So we are going to fix it in
different way.

leapp-to/prototype,leapp-to/prototype,leapp-to/prototype,leapp-to/prototype